Improvement in machines for forming artificial stone



Josine; s. nLLroTT, or BoSToN, MASSAGHUSETTS, Assienon `To THE UNION `STONE COMPANY, OF SAME Letters Patent No. 111,921,dated -February 21, 1871.

IMPROVEMENT INv MACI-IINES FOR FORMING ARTIFICIAL STONE..

The Schedule referred to in these Letters Patent and mak'ing part of the same.

I, J osIAH S. ELLIoTT,.of Boston, Massachusetts, 'have invented certain Improvements in Machines for the Manufacture of Cemented and other Plastic Ma terials into Grinding and Polishing-Stones, Building- Blocks, and other forms, when made in molds, of which-the following is a specification. l

My invention relates to three 'points- First,.tlle application of 'a percussive force to the material in the mold for the purpose of forming, press ing, and condensingr it.

Second, releasing the molded article quickly from the mold.

Third, removing the article, when thus released, safely and quicklyfrom the machine.

rlhe generalsc'ope of the machine may be described as follows.:

The hopper havin g been filled with'the prepared materials,"tl1e machine is set in motion, anda feeder c'on'- safely and taining enough of the materials to form the proposed the materials, carrying them into a mold and partially condensing them. Theblowis repea ted,and the .ram is raised'or a third blow; the feeder is carried back under the hopper to its original position, and a third blow is given by the ram, which thenrises and is held still andfirm, while the core is withdrawn downward and the mold is pressed upward against the face of the ram, which kpushes out the molded article upon a table carried underit, upon which the article is'rec'eived and removed to the front of the machine, the whole process being automatic and repeated indefinitely,` and the machine in regular and continuous mot-ion.

Figure l is a perspective view of the whole inachine.

Figure 2 is a cross vertical sectiohfof it ready to strike the rst blow.

Figure 3 is a cross vertical Section of it after the nalrvblow, the molded article being out of the mold upon the table.

Figure 5 is a side eleration of the-carriage, enlarged.

Figure 4 is a cross-section of the same.

The machine is of iron and steel, or. other metal, and may be Ofany size adapted to the work tobe performed. i

A is a frame.

B is a hammer or ram, the face of which strikes upon 'the material in the mold O to form and compress it. i

To raise and release the rani so as to give repeated blows, and also to retain the ram in its elevatedposition longlenough to remove the molded article from the mold and from the machine, and lill` the mold. anew without stopping the machine, is the first point.

Mode of Operation.

The hopper A being filled, the feeder B is `moved under the ram bythe cam J in the large wheel, which Amoves the lever K, which is connected, by the link L, with the lever M, which, through the link N, moves the cam O, which is connected with the frame A by the link I?,

The cam O is pivoted on the crank upon the crankshaft Q, which moves the feeder' forward.

The movement continues in the Same direction, turning the crank npward,.and draws ont the bottom R of the feeder ready for the blow, by means ot' the arm S attached to the crank-shaft Q.

The cam J in the large wheel moving now concentric with it, the feeder remai'ns'at rest long enough for the ram to strike two blows' through it, forcing the materials into the mold,and long enough for the ram to be raised toits greatest height.

The bottom of the feeder is nowl carried under it again bylreversing the lever K by means of the cam J in the large wheel, and the same motion withdraws f the feeder to its first position. The ram nowgives a third and linal blow as this machine is gearedand is partiallynaised, as elsewhere described. l

The means by which Athe blows are given may be" iow described as follows: Y

The power being applied to the shaft D, the cam F, which is fast to it, is carried upward inside the open space in the ram, running upon the roller G, and lifting the ram till the cam presents its straight side and releases the ram,-'which falls and gives the blow. The' cam continues itsv motion, and in like manner a second blow is given.

The motion still continues,while the arc I, which is concentric with the shaft D, passes the roller G, and the feeder is withdrawn, as described above.

The arc I having passed over the roller G, the third blow is given, and the cam F continues its motion till its short curve H engages the roller G and slightly -raises the ram, which remains still while the arc I by the mold by the links g g, and by means of this arrangeshaft 7.1, which is connected u'it-h the right-angle lever ier-weight, o, upon the end of the shaft 7:, not shown 'which moves upon slides? which are. fixed to the sha-ft, is moved downward by means of' the links 71 b and cranks c c. p

The mold is new pressed upward against the face of the ram bythe continued motion of the cam W' in large wheel operating on the cam X, which is pivoted to the crank on the shaft d.

On said shaft d' are two arms, f'f, attached' to the ment the mold is carried up against the face of the ram, which is firmly held at rest by the cam F, and the molded article forced out downward upon the table carried under it by the arrangement next to be described. Y

rlhe Vtable l1. rests upon a carriage moving upon slides by means of the arms t' i, Iig. 1, attached to the l by the rod on., the lever l having a roll working against the cam a, operated by the largcu'heel E, moved by the shaft l).

As the mold rises the table iscarried under -it by the above arrangement, and remains till the article is' forced down upon itbythe device already described, 'whenthe earriageis withdrawn by means o f acouliframe ofthe machine. Y

The tablel's pivoted to the levers s sat t', and the leversare pivoted tothecarriageat u.

rlhe bar o1` scraper c is also pivoted to the" lower ends of the levers s s.

After the'carriz'tge has run Vunder the molded'article to reeeiveit,` the table'is raised, by means ofthe levers 's s, against the bottom of the molded article, toreeeive/iteas itis pushed out of the mold by the ram, as

shown and described.

before described. (.)nc object in thus receiving it is to prevent injury to it by its falling, and thus preserve it in form, materials for artificial stone being usually soft when molded, and requiring time to harden.

The scraper' c is also raised by the same motion of the levers s s, and, being pivoted furtherfrom the fulcrum u, is raised higher than the tablerbeliind the molded article, and, as the carriage is withdrawn, secures the removal of the article, which often adheres to theYY face of the ram, and retains it upon the table.

Attached to the scraper c are guides fc, which, as the carriage moves under the mold, hold down the' scraper' so that it does not strike the side of the mold, but passes under it. A

XVhat I claim as my invention, and desire to se#- cnre by Letters Patent, is-

1. lhe machine, herein shown and described, for inanufactiu'ing artificial stone, consisting of the ram B, incid C, vfeeder B', core'fn,- and olf-bearing table h', constructed,combined, and'operating as set forth.v

2. The combination, in an artieial-stoue machine, of the ram B, oscillating feeder' B', and movable moldv C, with their connections, when constructed, arranged, y

and operating substantially as and for the purpose l herein described.

3. rlhe combination, hereinshoivn, of the ram B, oscillating; feederv B', movable mold O, and off-bearing' table h, with their connecting and operating mechanism, as herein set forth.

1. rlhe combination and arrangementof the mold C, shaft d, cams X .and W, and their connections, as

The arrangement o f eanis- \V and X, shaft d, and

` core a, with their connections, as herein shown and described.

. (i. .The combination of the ram B and feederB with their operating mechanism, when constructed and op' .atedin the manner -set forth.

'7. The'combination of the lever s and the pivots u and t with the table 7g. andthe scraper e, as and for` the purposes described.

\Vitne s ses:

Jas. l?. Woon,

HENRY F. FRENCH.

Josian ELLIOTT. 

